f8fc109960
repo: https://github.com/u-boot/u-boot commit: d80bb749fab53da72c4a0e09b8c2d2aaa3103c91 Change-Id: Ie6434426e1ec15bc08bb1832798e371f3fd5fb29
18 lines
720 B
Plaintext
18 lines
720 B
Plaintext
To use SNTP support, add define CONFIG_CMD_SNTP to the
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configuration file of the board.
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The "sntp" command gets network time from NTP time server and
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syncronize RTC of the board. This command needs the command line
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parameter of server's IP address or environment variable
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"ntpserverip". The network time is sent as UTC. So if you want to
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set local time to RTC, set the offset in second from UTC to the
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environment variable "time offset".
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If the DHCP server provides time server's IP or time offset, you
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don't need to set the above environment variables yourself.
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Current limitations of SNTP support:
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1. The roundtrip time is ignored.
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2. Only the 1st NTP server IP, in the option ntp-servers of DHCP, will
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be used.
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